Nashville airport saves thousands annually with geothermal - Smart Energy Decisions

Energy Efficiency, Energy Procurement, Industrial, Power Prices, Industrial, Sourcing Renewables  -  August 26, 2016

Nashville airport cuts energy use with geothermal

The installation of a geothermal cooling system at Nashville International Airport is expected to save $430,000 a year in utility costs, according to trade media publication Engineering News-Record. 

The media outlet reported Aug. 24 that the Nashville airport recently converted a former onsite quarry into the water source for the lake plate geothermal cooling system that is cutting energy consumption by more than 50%. The $10.4 million project, which cools the 900,000 square foot terminal building, is expected to save 1.3 kWh and $430,000 in utility costs each year. 

Those estimates are based on the first five full months of the system's operation, according to the report, and exceed the expectations the Metro Nashville Airport Authority had for the project. 

"The 50% improvement is specific to the kilowatt per ton of cooling produced by the chilled water plant," Engineering News-Record quoted Metro Nashville Airport Authority Vice President Christine Vitt as saying.  "Pre-implementation, it was taking more than 1 kW per ton, versus just over 0.5 kW per ton over the first few months of operation."

Keywords: Nashville

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